I recently caught The Bye Bye Man on Netflix, and the good thing is that it’s not irredeemably bad.
Which still means that it’s bad, just not so bad you get angry at yourself for having watched it.
It has all the elements of a really entertaining, well-done movie but the most essential element of a horror movie is missing, which is an antagonist doesn’t makes sense.
If the screenplay had undergone at least two or three rewrites it might have been a much, MUCH better movie.
As it stands, it’s watchable, but not by much.
SCREENPHILES 
The Bye Bye Man was such an annoyingly bad film. It failed on so many basic levels that it left me scratching my head trying to figure out why anyone would greenlight this film.
That’s the thing though, plot-wise it’s not significantly different from It Follows, which is a really good movie (though not without it’s problems). So, what made The Bye Bye Man so, so much worse? As far as I can tell, it’s the writing. It this movie were at least somewhat logical I think it would have been at least enjoyable, instead of a waste of energy.